Commit c89f2ee5 authored by Chuck Lever's avatar Chuck Lever Committed by Trond Myklebust
Browse files

NFS: make iocb available everywhere in direct write path



Pass the iocb argument all the way down to the direct write request
scheduler, and make it available in nfs_direct_write_result.

Test plan:
Compile the kernel with CONFIG_NFS and CONFIG_NFS_DIRECTIO enabled.
Millions of fsx-odirect ops.  OraSim.
Signed-off-by: default avatarChuck Lever <cel@netapp.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 47989d74
......@@ -424,29 +424,6 @@ static struct nfs_direct_req *nfs_direct_write_alloc(size_t nbytes, size_t wsize
return dreq;
}
/*
* Collects and returns the final error value/byte-count.
*/
static ssize_t nfs_direct_write_wait(struct nfs_direct_req *dreq, int intr)
{
int result = 0;
if (intr) {
result = wait_event_interruptible(dreq->wait,
(atomic_read(&dreq->complete) == 0));
} else {
wait_event(dreq->wait, (atomic_read(&dreq->complete) == 0));
}
if (!result)
result = atomic_read(&dreq->error);
if (!result)
result = atomic_read(&dreq->count);
kref_put(&dreq->kref, nfs_direct_req_release);
return (ssize_t) result;
}
static void nfs_direct_write_result(struct rpc_task *task, void *calldata)
{
struct nfs_write_data *data = calldata;
......@@ -480,8 +457,12 @@ static const struct rpc_call_ops nfs_write_direct_ops = {
* XXX: For now, support only FILE_SYNC writes. Later we may add
* support for UNSTABLE + COMMIT.
*/
static void nfs_direct_write_schedule(struct nfs_direct_req *dreq, struct inode *inode, struct nfs_open_context *ctx, unsigned long user_addr, size_t count, loff_t file_offset)
static void nfs_direct_write_schedule(struct nfs_direct_req *dreq, unsigned long user_addr, size_t count, loff_t file_offset)
{
struct file *file = dreq->filp;
struct inode *inode = file->f_mapping->host;
struct nfs_open_context *ctx = (struct nfs_open_context *)
file->private_data;
struct list_head *list = &dreq->list;
struct page **pages = dreq->pages;
size_t wsize = NFS_SERVER(inode)->wsize;
......@@ -539,10 +520,11 @@ static void nfs_direct_write_schedule(struct nfs_direct_req *dreq, struct inode
} while (count != 0);
}
static ssize_t nfs_direct_write(struct inode *inode, struct nfs_open_context *ctx, unsigned long user_addr, size_t count, loff_t file_offset, struct page **pages, int nr_pages)
static ssize_t nfs_direct_write(struct kiocb *iocb, unsigned long user_addr, size_t count, loff_t file_offset, struct page **pages, int nr_pages)
{
ssize_t result;
sigset_t oldset;
struct inode *inode = iocb->ki_filp->f_mapping->host;
struct rpc_clnt *clnt = NFS_CLIENT(inode);
struct nfs_direct_req *dreq;
......@@ -552,15 +534,18 @@ static ssize_t nfs_direct_write(struct inode *inode, struct nfs_open_context *ct
dreq->pages = pages;
dreq->npages = nr_pages;
dreq->inode = inode;
dreq->filp = iocb->ki_filp;
if (!is_sync_kiocb(iocb))
dreq->iocb = iocb;
nfs_add_stats(inode, NFSIOS_DIRECTWRITTENBYTES, count);
nfs_begin_data_update(inode);
rpc_clnt_sigmask(clnt, &oldset);
nfs_direct_write_schedule(dreq, inode, ctx, user_addr, count,
file_offset);
result = nfs_direct_write_wait(dreq, clnt->cl_intr);
nfs_direct_write_schedule(dreq, user_addr, count, file_offset);
result = nfs_direct_wait(dreq);
rpc_clnt_sigunmask(clnt, &oldset);
nfs_end_data_update(inode);
......@@ -663,10 +648,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, size_t
int page_count;
struct page **pages;
struct file *file = iocb->ki_filp;
struct nfs_open_context *ctx =
(struct nfs_open_context *) file->private_data;
struct address_space *mapping = file->f_mapping;
struct inode *inode = mapping->host;
dfprintk(VFS, "nfs: direct write(%s/%s, %lu@%Ld)\n",
file->f_dentry->d_parent->d_name.name,
......@@ -704,7 +686,7 @@ ssize_t nfs_file_direct_write(struct kiocb *iocb, const char __user *buf, size_t
goto out;
}
retval = nfs_direct_write(inode, ctx, (unsigned long) buf, count,
retval = nfs_direct_write(iocb, (unsigned long) buf, count,
pos, pages, page_count);
if (mapping->nrpages)
invalidate_inode_pages2(mapping);
......
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